def test_nested_insertion(self):
scene_graph = SceneGraph()
scene_graph.add("foo")
scene_graph.add_to_parent("bar", "foo")
self.assertTrue("foo" in scene_graph)
self.assertTrue("bar" in scene_graph)
# Test foo is the parent of bar
self.assertEqual(scene_graph.find_node_by_entity("bar").parent.entity, "foo")
def test_removal_of_nested_entitys_parent(self):
scene_graph = SceneGraph()
scene_graph.add("foo")
scene_graph.add_to_parent("bar", "foo")
self.assertIn("foo", scene_graph)
self.assertIn("bar", scene_graph)
scene_graph.remove("foo")
self.assertNotIn("foo", scene_graph)
self.assertNotIn("bar", scene_graph)
